up2date registration problem

Hallo,

I have problem registering the up2date with my RHEL AS 4 system.

We have purchased this for one of our servers and got it preinstalled.
So I tried to register it with up2date. I have received the "Red Hat
login creation request" and "New Subscription Activation" emails,
then I
have create the account and in the Customer Center I see (surprisingly)
two subscriptions - "Red Hat Enterprise Linux AS Academic Edition
Serviced System" and "Red Hat Enterprise Linux (Academic
Edition)" with
Installation Numbers.

Now I have tried to register with up2date and get the "Insufficient
Software Channel Entitlements: cfid5488 Red Hat...All available
subscriptions for the requested channel have been exhausted" error. I
must mention that I have succeeded with registering once before but the
system did not appeared in the RHN and I have tried to reregister it.

Now I see no systems in RHN, in the Customer Center I see "You do not
currently have any web support entitlements" (does this mean that I have
no support?) and can't download updates with up2date L

 

Does anybody have any advice?

Thanks,

Lukas